North America Native Plant

Tolmie Star-tulip

Botanical name: Calochortus tolmiei

USDA symbol: CATO

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Calochortus caeruleus (Kellogg) S. Watson var. maweanus (Leichtlin) Jeps., orth. var. (CACAM3)  âš˜  Calochortus coeruleus (Kellogg) S. Watson var. maweanus (Leichtlin) Jeps. (CACOM)  âš˜  Calochortus elegans Pursh var. lobbii Baker (CAELL)  âš˜  Calochortus maweanus Leichtlin (CAMA44)  âš˜  Calochortus purdyi Eastw. (CAPU27)   

Tolmie Star-Tulip: A Delicate Pacific Northwest Native Worth Growing If you’re looking to add a touch of understated elegance to your Pacific Northwest garden, the Tolmie star-tulip (Calochortus tolmiei) might just be the perfect native beauty you’ve been searching for. This charming little perennial forb brings delicate star-shaped blooms and ...

Tolmie Star-Tulip: A Delicate Pacific Northwest Native Worth Growing

If you’re looking to add a touch of understated elegance to your Pacific Northwest garden, the Tolmie star-tulip (Calochortus tolmiei) might just be the perfect native beauty you’ve been searching for. This charming little perennial forb brings delicate star-shaped blooms and authentic regional character to gardens lucky enough to host it.

What Makes Tolmie Star-Tulip Special

Don’t let its modest size fool you – this native gem packs plenty of charm into its 6-18 inch frame. The Tolmie star-tulip produces exquisite white to pale pink flowers adorned with purple or blue markings that seem to twinkle like tiny stars in the garden. These delicate blooms appear in late spring to early summer, creating a brief but memorable show that perfectly captures the essence of Pacific Northwest wildflower meadows.

As a true native species, this plant has been gracing the landscapes of California, Oregon, and Washington for countless generations. Its natural distribution spans these three states, where it has evolved to thrive in the region’s unique climate patterns.

Where Tolmie Star-Tulip Shines in Your Garden

This versatile native works beautifully in several garden settings:

  • Native plant gardens that celebrate regional flora
  • Woodland gardens with dappled shade
  • Rock gardens where its delicate form can be appreciated up close
  • Naturalized areas that mimic Pacific Northwest ecosystems
  • Understory plantings beneath taller native shrubs and trees

Benefits Beyond Beauty

While the Tolmie star-tulip is certainly easy on the eyes, it offers more than just good looks. The nectar-rich flowers attract native bees, butterflies, and other small pollinators, making it a valuable addition to pollinator-friendly gardens. By choosing this native species, you’re supporting local wildlife while reducing the need for intensive maintenance.

Growing Tolmie Star-Tulip Successfully

Hardy in USDA zones 6-9, this perennial forb is well-adapted to Pacific Northwest growing conditions. Here’s what you need to know for success:

Growing Conditions

  • Light: Partial shade to dappled sunlight (mimics its natural woodland habitat)
  • Soil: Well-draining soil is absolutely essential
  • Moisture: Cool, moist conditions during the growing season
  • Summer care: Respects natural dry dormancy period

Planting and Care Tips

The key to success with Tolmie star-tulip lies in understanding its natural rhythm. Plant the bulbs in fall when cooler weather returns, ensuring excellent drainage to prevent rot. During the growing season, provide consistent moisture, but come summer, allow the plant to enter its natural dormancy period by reducing watering significantly.

This low-maintenance approach mirrors the plant’s natural habitat, where it experiences wet winters and springs followed by drier summer months. Once established, your Tolmie star-tulip will return year after year with minimal intervention.

Is Tolmie Star-Tulip Right for Your Garden?

If you garden within its native range of California, Oregon, or Washington, and you appreciate subtle beauty over flashy displays, the Tolmie star-tulip could be an excellent addition to your landscape. It’s particularly well-suited for gardeners who want to create authentic regional ecosystems and support local wildlife.

Keep in mind that this is a plant for patient gardeners who enjoy seasonal rhythms – its brief but beautiful blooming period and summer dormancy are all part of its natural charm. If you’re looking for continuous color and year-round foliage, you might want to combine it with other native plants that offer different seasonal interests.

For Pacific Northwest native plant enthusiasts, the Tolmie star-tulip represents everything wonderful about regional gardening: authentic beauty, ecological value, and a deep connection to place. Give this delicate native a try, and you might just find yourself enchanted by its quiet elegance.

Tolmie Star-tulip

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Liliaceae Juss. - Lily family

Genus

Calochortus Pursh - mariposa lily

Species

Calochortus tolmiei Hook. & Arn. - Tolmie star-tulip

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA